If I understand it correctly, I think you talk about introverts and extroverts? Some people feel best by themselves and others prefer to keep in groups. It's true that introverts are more likely to become scientists although they're not always quiet. I know a few scientists myself and they love to party hard on their days off.

You're right that humble people often go unappreciated. That's the world we live in. There are ways out of it though. I was very shy and quiet as a child and I trained myself how to stand up form myself. Main thing is your posture - standing tall, back straight, head up, eye contact. Next thing is tone of your voice- lower your voice, speak loud (no yelling!). It works magic. These days I manage to intimidate men twice my size following these rules.